【摘要】 本文利用选举定理建立并推广了“选举模型”,利用此模型简化了一类古典概型问题的计算,对古典概型的学习有一定的参考意义。更多还原

【Abstract】 In this article,it uses the selecting fomula and spreads selecting model. Meanwhik it has simplied a sort of the caculation of classic outhining pattern, and the reference to study it as well.更多还原